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AN1514 데이터시트(PDF) 4 Page - STMicroelectronics |
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AN1514 데이터시트(HTML) 4 Page - STMicroelectronics |
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4 / 17 page ![]() List of figures AN1514 4/17 List of figures Figure 1. Double output buck topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2. Double output buck-boost topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 3. Converter schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Figure 4. Board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 5. Board prototype . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Figure 6. Efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 7. Converter schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 8. Efficiency vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 9. Vin=80Vacrms, Iout2=75 mA, CH1=Vout1, CH2=Iout1, CH3=ILp, CH4=Vout2 . . . . . . . . . . . . . 13 Figure 10. Vin=285Vacrms, Iout2=75 mA, CH1=Vout1, CH2=Iout1, CH3=ILp, CH4=Vout2 . . . . . . . . . . . . 13 Figure 11. VIPer22A-E temperature at maximum load with parasitic capacitance . . . . . . . . . . . . . . . 13 Figure 12. VDS and ID at Vin=230Vacrms, Iout=250 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 13. Conducted emissions at full load with EN55014 limits: line emissions . . . . . . . . . . . . . . . . 15 Figure 14. Conducted emissions at full load with EN55014 limits: neutral emissions . . . . . . . . . . . . . 15 |
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